Alligator weed, Alternanthera philoxeroides (Mart.) Griseb. (Amaranthaceae) is a perennial, stoloniferous herb which grows primarily as an emergent aquatic plant. It was first recorded in New Zealand in 1906 and is distributed from the Waikato Region nort ...

New Zealand currently supplies approximately 60% of the world white clover (Trifolium repens L.) seed market, of which 99% is produced in the Canterbury growing region. However, this important cash crop may be infested by a range of insect pests which con ...

Entomology, like many other biological disciplines has developed into a quantitative science in nearly all aspects of the subject. Insect ecology is no exception, and in fact, has probably received more attention recently with the rapid development of ins ...

The biological control of Sclerotium cepivorum, the causal agent of onion white rot, by Trichoderma harzianum and T. virens was studied in a glasshouse trial. T. Harzianum (isolates C52 and D73) and T. virens (isolate GV4) afforded early season disease co ...

Spore-forming bacteria were investigated as potential biological control agents of the pea root rot fungus, Aphanomyces euteiches (Oomycete). Isolations of the bacteria were made both directly from field soils (558) and from the rhizosphere of peas grown ...

There is anecdotal evidence that populations of the New Zealand endemic red admiral butterfly Bassaris gonerilla (F.) have declined since the early 1900s. This decline has been associated with the introduction of the generalist pupal parasitoids Pteromalu ...

Weeds often grow over a wide range of environments, experiencing a number of environmental stresses with varying intensities. As a consequence these weeds will often exhibit differences in morphology and physiology. It has been suggested that these differ ...

Intensive agricultural techniques, such as the high input of pesticides has caused increasing pest problems in arable agroecosystems. In New Zealand, biodiversity and sustainability in agroecosystems have become important issues along with increasing conc ...

Cirsium arvense (L.) Scop. (Californian, Canada, or creeping thistle) is an exotic perennial herb indigenous to Eurasia that successfully established in New Zealand (NZ) approximately 130 years ago. Presently, C. arvense is considered one of the worst inv ...